in terms of theology, they're not any different. in terms of practice...
R2-45 is a Scientology auditing process created by L. Ron Hubbard. The process of R2-45 specifically pertains to shooting the target with a Colt .45 pistol, causing the victim's "thetan" to leave the body (exteriorization).
that's just one little example of the hugely vast array of fuged up things they do. they're the worst religion currently active on the planet today, in my opinion. it's only by lack of popularity that they aren't more harmful than islam.
You're suggesting Islam as a whole is harmful?